Background: Surgical site infection still causes considerable morbidity and high cost to the health care system and is becoming increasingly important medicolegally. The present study was conducted to assess the effectiveness and safety of using warming devices in patients undergoing elective inguinal hernia surgery. Materials & Methods: 100 patients were subjected through a general examination and local examination. Surgical site infection was confirmed after culture sensitivity report of discharge from wound. Complete record of the case was entered in the proforma of the study. Results: In aged >50 years, the rate of SSI with device was seen in 1 and without device in 1 patient and <50 years, it was 1 and 4 respectively. With hypertension, with device was seen in 1 and without hypertension with device in 1 and without device in 5 patients. With diabetes with device in 1, without diabetes with device in 1 and without device in 5 patients. With multiple co-morbidities, with device in 1 and without multiple co-morbidities with device in 1 and without device in 4 patients. In unilateral hernia repair with device was seen in 2 and without device in 4 patients. In bilateral hernia repair without device in 1 patient. In patients whose surgical time was within 1-2 hours, rate of SSI with device was 2 and without device seen 3. Surgical time>2 hours without device 2 patients. In patients, where previous abdominal surgery done with device in 2 and without device in 4 patients. The difference was significant (P< 0.05). Conclusion: Warming devices reduce the risk of SSI in patients more than 50 years of age. Warming devices in this study has no effect on presence of co-morbidities whoever absence of co- morbidities reduces the risk of SSI. Warming devices reduce the risk of SSI in patients undergoing surgery for more than 2 hours. Warming devices reduce the risk of SSI in patients undergoing bilateral inguinal hernia more than unilateral hernia possibly due to extended surgical time.